The aim of this work was to determine the impact of using independently berry density and diameter as
sorting methodologies on important physicochemical parameters affecting the grape quality, such as
mechanical properties, phenolic composition and aromatic profile. Muscat Hamburg berries were
classified according to the density by flotation in different salt solutions and to the diameter. The
three most representative density (1081, 1088 and 1094 kg/m3) and diameter (16–17, 18–19 and
20–21 mm) classes were selected. The results showed that there were relationships of both density
and diameter with the mechanical properties and chemical composition of the berries. Densimetric
sorting is a more promising methodology to separate grape berries with different quality attributes,
particularly skin hardness, berry cohesiveness and resilience, total hydroxycinnamic acids, anthocyanins
and rose oxide, than diameter sorting. This knowledge can be of great interest for the ‘fresh-cut’ industry
in the production of ‘ready-to-eat’ fruits salad.
The aim of this work was to determine the impact of using independently berry density and diameter as
sorting methodologies on important physicochemical parameters affecting the grape quality, such as
mechanical properties, phenolic composition and aromatic profile. Muscat Hamburg berries were
classified according to the density by flotation in different salt solutions and to the diameter. The
three most representative density (1081, 1088 and 1094 kg/m3) and diameter (16–17, 18–19 and
20–21 mm) classes were selected. The results showed that there were relationships of both density
and diameter with the mechanical properties and chemical composition of the berries. Densimetric
sorting is a more promising methodology to separate grape berries with different quality attributes,
particularly skin hardness, berry cohesiveness and resilience, total hydroxycinnamic acids, anthocyanins
and rose oxide, than diameter sorting. This knowledge can be of great interest for the ‘fresh-cut’ industry
in the production of ‘ready-to-eat’ fruits salad.
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